Ukrainian troops ride on an APC with a Ukrainian flag, in a field with sunflowers in Kryva Luka, eastern Ukraine, Saturday, July 5, 2014. Ukraine's forces claimed a significant success against pro-Russian insurgents on Saturday, chasing them from one of their strongholds in the embattled east of the country. Rebels fleeing from the city of Slovyansk vowed to regroup elsewhere and fight on. (AP Photo/Evgeniy Maloletka)

Photo: Evgeniy Maloletka, Associated Press

Ukrainian troops ride on an APC with a Ukrainian flag, in a field...

Ukrainian troops ride on an APC with a Ukrainian flag, in a field... Photo-6560479.89137 - SFGate

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People dance on a truck during the annual Gay Pride parade in central Sofia on July 5, 2014, as people march through the Bulgarian capital to protest discrimination against gays, lesbians and transsexuals and improve their integration in society. AFP PHOTO / NIKOLAY DOYCHINOVNIKOLAY DOYCHINOV/AFP/Getty Images

Photo: Nikolay Doychinov, AFP/Getty Images

People dance on a truck during the annual Gay Pride parade in...

People dance on a truck during the annual Gay Pride parade in... Photo-6560480.89137 - SFGate

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A Philadelphia firefighter walks past burned adjoining homes on Saturday, July 5, 2014, in Philadelphia. Authorities say the fast-moving fire early Saturday has killed four children. Fire department officials say there is no immediate word on how many others were injured in the blaze that destroyed eight homes in the row and engulfed a total of 10 houses. (AP Photo/Michael Perez)

Bureau of Land Management firefighters work to extinguish a brush fire along U.S. Highway 26 at mile marker 188 near Dietrich, Idaho on Saturday, July 5, 2014. The fire that started Friday afternoon reached about 130 acres Saturday morning. (AP Photo/Times-News, Drew Nash)

Photo: Drew Nash, Associated Press

Bureau of Land Management firefighters work to extinguish a brush...

Bureau of Land Management firefighters work to extinguish a brush... Photo-6560468.89137 - SFGate

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Israeli riot police secure a street during clashes with Palestinian protesters (unseen) in the Arab Israeli city of Ar'Ara, north of Israel, on July 5, 2014. A Palestinian teenager whose abduction and murder caused violent protests was burned alive, autopsy reports show, as clashes over the killing spread Saturday from east Jerusalem to Arab Israeli towns. AFP PHOTO / JACK GUEZJACK GUEZ/AFP/Getty Images

Photo: Jack Guez, AFP/Getty Images

Israeli riot police secure a street during clashes with Palestinian...

"Aloitadores" (fighters) struggle with wild horses during the "Rapa Das Bestas" (Shearing of the Beasts) traditional event in the Spanish northwestern village of Sabucedo, some 40 kms from Santiago de Compostela, on July 5, 2014. During the 400-year-old horse festival, hundreds of wild horses are rounded up from the mountains, trimmed and groomed. AFP PHOTO / MIGUEL RIOPAMIGUEL RIOPA/AFP/Getty Images

Photo: Miguel Riopa, AFP/Getty Images

"Aloitadores" (fighters) struggle with wild horses during the "Rapa...

Medical teams help people from the crowd when people begin to be crushed as British group The Libertines perform on stage at the British Summer Time festival in Hyde Park in central London, on July 5, 2014. The series of concerts sees international acts such as Neil Young, Black Sabbath and the Libertines appear. AFP PHOTO/Leon NealLEON NEAL/AFP/Getty Images

Photo: Leon Neal, AFP/Getty Images

Medical teams help people from the crowd when people begin to be...

Medical teams help people from the crowd when people begin to be... Photo-6560473.89137 - SFGate

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CORRECTS SPELLING OF HICKAM, NOT HICKHAM - A Chinese naval official directs members of the media and visitors aboard the Chinese People's Liberation Army Navy ship Haikou, Saturday, July 5, 2014, at Hawaii's Joint Base Pearl Harbor-Hickam. Chinese ships will be participating in the Rim of the Pacific (RIMPAC) multinational naval exercises taking place in and around the Hawaiian Islands. (AP Photo/Marco Garcia)

An Iraqi youth jumps off a diving board at a swimming pool in central Baghdad's Palestine Street on July 5, 2014 on a hot summer day. AFP PHOTO / AMER AL-SAADIAMER AL-SAADI/AFP/Getty Images

Photo: Amer Al-saadi, AFP/Getty Images

An Iraqi youth jumps off a diving board at a swimming pool in...

An Iraqi youth jumps off a diving board at a swimming pool in... Photo-6560465.89137 - SFGate

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"Cap'n Chad" Chad Pinkerton, from Colorado City, Texas, navigates his Mud Shark through the mud pit during the Plowboy Mud Bog on Saturday, July 5, 2014, in Roscoe, Texas. Pinkerton took a 1959 RedFish Shark boat and put it on a 1987 Chevrolet pickup truck to make his mud bogging vehicle. (AP Photo/Abilene Reporter-News, Tommy Metthe)

Israeli members of knight clubs, wearing costumes, take part in the reenactment of the Battle of Hattin (aka the Horns of Hattin) from the ancient northern city of Tzipori to Horns of Hattin on July 5, 2014. Some 70 Israelis, mostly Russian origin, took part in the reenactment of the battle that was fought on the same day in 1187, when Arab Sultan Salaheddin's army crashed the Crusader forces on his way to Tiberias. AFP PHOTO/MENAHEM KAHANAMENAHEM KAHANA/AFP/Getty Images

Photo: Menahem Kahana, AFP/Getty Images

Israeli members of knight clubs, wearing costumes, take part in the...

Israeli members of knight clubs, wearing costumes, take part in the... Photo-6560482.89137 - SFGate

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SALVADOR, BRAZIL - JULY 05: Keylor Navas of Costa Rica makes a save during the 2014 FIFA World Cup Brazil Quarter Final match between the Netherlands and Costa Rica at Arena Fonte Nova on July 5, 2014 in Salvador, Brazil. (Photo by Dean Mouhtaropoulos/Getty Images)